Tuna is highly prized by sushi chefs, but quality can vary and the process of checking the fish by hand with saws at the market can be dangerous. Seafood lovers know what makes tuna sashimi and sushi ...

Seafood lovers know the fatty marbling is what makes tuna sashimi and sushi so tasty, so for the industry, it's the fish's level of fattiness that's used to judge its quality and pricing. Usually, ...